<!DOCTYPE HTML >
<html >
<meta charset=utf-8>
<head >
<title >Test that we can decode multichannel file with webaudio and <audio ></title >
<script src="/tests/SimpleTest/SimpleTest.js" ></script >
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head >
<body >
<pre id="test" >
<script class="testbody" type="text/javascript" >
var testcases = [
{
filename: "audio-quad.wav" ,
channels: 4
},
{
filename: "8kHz-320kbps-6ch.aac" ,
channels: 6
}
];
SimpleTest.waitForExplicitFinish();
function decodeUsingAudioElement(filename, resolve) {
var a = new Audio ();
a.addEventListener("error" , function() {
ok(false, "Error loading metadata" );
resolve();
});
a.addEventListener("loadedmetadata" , function() {
ok(true, "Metadata Loaded" );
resolve();
});
a.src = filename;
a.load();
}
function testOne({filename, channels}) {
return new Promise(resolve => {
var xhr = new XMLHttpRequest();
xhr.open("GET" , filename);
xhr.responseType = "arraybuffer" ;
xhr.onload = function() {
var context = new AudioContext();
context.decodeAudioData(xhr.response, function(b) {
ok(true, "Decoding of a wave file with four channels succeded." );
is(b.numberOfChannels,
channels,
`The AudioBuffer decoded from ${filename} should have ${channels} channels.`);
decodeUsingAudioElement(filename, resolve);
}, function() {
ok(false, `Decoding ${filename} failed)`);
decodeUsingAudioElement(filename, resolve);
});
};
xhr.send(null);
});
}
async function runTest() {
for (var testcase of testcases) {
await testOne(testcase);
}
SimpleTest.finish();
}
addLoadEvent(runTest);
</script >
</pre >
</body >
</html >
Messung V0.5 C=91 H=96 G=93
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